Re: [PATCH 0/4] mm: Simplfy cow handling

[Linus Torvalds]

On Fri, Aug 21, 2020 at 4:50 PM Peter Xu <peterx@xxxxxxxxxx> wrote:
>
>   - Run a busy loop dirty program [1] that uses 6G of memory, restrict to 1G
>     RAM + 5G swap (cgroup).  A few hours later, all things still look good.
>     Make sure to observe (still massive) correct page reuses using the new
>     counter using the last patch, probably when swapping in.
>
>   - Run umapsort [2] to make sure uffd-wp will work again after applying this
>     series upon master 5.9-rc1 (5.9-rc1 is broken).

I obviously like the diffstat, am wondering if you saw any throughput
changes or similar for the busy-loop dirtying thing?

              Linus